COM iMX6 Bootloader U-Boot

Enter Bootloader Console

1. Connect DHCOM UART1 (FF UART) via null modem cable to the RS232 Port of your PC
2. Start terminal program (e.g. Tera Term) on the Host PC with the following settings:

   Baud rate: 115200

   Data: 8 bit

   Parity: none

   Stop bits: 1 bit

   Flow control: none

3. Press "del" on the Host PC during Core Module system start to enter bootloader console

U-boot console commands

SPI Flash

SPI Flash Init

sf probe <bus:cs> [frequency]

Example: sf probe 0:1

Description: Initializes the OnBoard SPI Flash

SPI Flash Read

sf read <SDRAM address> <SPI Flash address> <Bytes>

Example: sf read 80000000 40000 10000

Description: Copies 64kByte from SPI Flash address 0x4_0000 to SDRAM address 0x8000_0000

SPI Flash Write

sf write <SDRAM address> <SPI Flash address> <Bytes>

Example: sf write 80000000 40000 10000

Description: Copies 64kByte from SDRAM address 0x8000_0000 to SPI Flash address 0x4_0000

SPI Flash Erase

sf erase <SPI Flash address> <Bytes>

Example: sf erase 40000 10000

Description: Deletes SPI Flash content from address 0x4_0000 to 0x4_FFFF

Note: The Bytes information needs to be sector size aligned!